Magneto post



Oct. Z6 1926. 1,604,924

Y L-. LINn-:cuM

MAGNETO POST Filed May 2e. 1925 IN VEN TOR.

M ATTORNEYS.

Patented Oct. 26, 1926.

UNITED STATES Parent OFFICE.

LAFAYETTE LINTECUM, OF ENGLEVALE, KANSAS.

MAGNETO POST.

. `Application filed May 2e, 1925. serial No. 33,021.

, in a housing which also serves to house the fly wheel of the engine, the transmission and to form an oil reservoir. The rotating permanent magnet carrier dips into this oil reservoir and consequently often picks up f small bits of metal or lint from the reservoir. One side of the eld coils is grounded and the other side thereof is led to a Vcontact on the `upper surface'of the plate and confronting an opening formed through the housing. Seated upon the housing at the opening and projecting through the opening is a magneto contact post which, in the ordinary type of construction, embodies a spring pressed contact element which engages the contact element of the coil plate.

In the operation of the engine, the vibration often causes a slight separation of this spring pressed contact and the contact of the coil plate and furthermore this vibration permits lint to collect beneath the contact point with the result that the contact point is often insulated and permits bits of metal to gather which often have a tendency to short circuit the contact point. Accordingly an important object of this invention is the provision of a magneto post of such character that insulation thereof from the coil plate contact `may not occur and which is furthermore of such structure that the magneto Contact may be fully protected against short. circuiting.

A still further object of the invention is to provide a device of'this character which may be left attached to the magneto cover plate when the same is removed and re- Y placed, thereby avoiding the now necessary operation of removing this binding post each time that the cover plate is removed.

These and other objects I attain by .the construction shown in the accompanying drawings, wherein for the purpose of illustration is shown a preferred embodiment of my invention and wherein Figure 1 is a vertical sectional view through a magneto showing a magneto post constructed in accordance with my invention applied thereto;

Figure 2 is a section on the line 2 2 of Figure 1.

Referring now more particularly to the drawings, `the numeral 10 generally designates the coil plate of the magneto and 11 the Contact of this coil platel and 12 a housing for the magneto having an opening 13 aligning with. the contact 11 of the magneto. The binding post employed consists of an insulating body 111 carrying a collar the sides of the opening 18. At its upper end, this body has a. binding post 16 co1nmunicating with va bore 17 formed in the body and having arranged therein a filling of preferably soft conducting material 19. Through this filling extends a bore 20, the lower end of which together with the housing 14k combine to produce a conical mouth 21 leading to the bore. Through the wall of the body and the metal 19 a set screw 22 is directe-d, the inner end of which enters the upper end of the bore.

Secured to the contact 11 is a conductor 23 of suficient length to extend approximately to ther upper end of the bore 20. The lowery end portion of this conductor is insulated, as at 24, and, if desired, this insulation may extend over the binding post or contact 11 of the magneto coil plate l0, as indicated at 25.

In the use of the device, the conductor 23 is vertically disposed and in replacing the cover engages in the funnel mouth 21 of the bore 20 and is directed into this bore. After the cover plate has been fully seated, the set screw 22 is moved inwardly until it engages the upper end of the conductor 23 and forces the same solidly into contact with the soft metal filling 19.

By this structure, a very firm contact is maintained at all times. The conductor 23 being soldered to the contact 11 may not separate therefrom by vibration during operation of the engine and the insulation will effectually prevent the collection of bits of metal which will tend to short circuit this contact. At the. upper end of the chamber, of cour-se, a firm mechanical as well as an electrical bond is provided between the core 19 and the contact.

Since the structure hereinbefore set forth is obviously capable of a certain. range of 415 adapted to be attached to the housing at Y lil() ISU change and modification Without materially departing from the spirit of my invention, I do not limit myself to suoli specilic structure except as hereinafter claimed.

I claim:- v

l. In combination With a magneto having a contact, a housing Within which the contact is arranged and having an opening, a magneto post secured tothe housing and extending into the opening, a conductor permanently secured alt its lower end to the contact of the magneto, said post being formed of insulating material vand having a metallic core provided with a bore into which the upper end of the conductor may extend, means for firmly seating the upper end of the conductor vagainst the Wall of the bore and a binding post for the magneto post electrically connected with Said core.

2. In combination with a magneto having a contact, a housing Within which the contact is arranged and having an opening, a magneto post secured to the housing and extending into the opening? a conductor permanently secured at its lower end to the Contact of the magneto7 said post being formed of insulating material and having a metallic core provided with a bore into which the upper end of the conductor may extend, means for firmly seating the upper end of the conductor against the Wall of the bore and a binding post for the magneto post electrically connected With said core, the lower end of the magneto post and said core being formed to `provide a funnel mouth directing the upper end of the conductor into the bore of the metallic core.

3. In combination with a magneto having a Contact, a. housing Within which the contact is arranged and having an opening, a magneto post secured to the housing and extending into the opening7 a conductor permanently secured at its lower end to the Contact of the magneto, said post being formed of insulating material and having a metallic core provided With a bore into which the upper end of the conductor may extend, means' for firmly seating the upper end ofthe conductor against the Wall of the bore and a binding post for the magneto post electrically connected with said core, the lower `end of the magneto post and said core being formed to provide a. funnel mouth directing the upper end of the conductor into the bore of the metallic core, the magneto Contact and said conductor beneath said magneto post being insulated.

In testimony whereof I hereunto aix my si gnature.

LAFAYETTE LIN'IECUM. 

